Ok I understand. I asked, because on Mac to part where the scrollbar was/is does not react to the opacity slider. And my workaround was to hide the scrollbar.
But since I still have the problem that my windows opacity slider is fading the background image instead of the page Scrivener Windows Composition Mode with Background Image: Changing Opacity fades the image instead of the paper
I cannot test your suggestions. But I think one of them is going to work fine for me as soon as the other problem is solved.
Kind regards,
Mike